Rotary bevel-shears.



c. J. wA'msLln.4 Y Boum! BEvEL s HEAns'. (No Model.)

(Application led May 8, 1901.)

Patented Nov. I2,v |90I.

2 SheetSI-Sheet II.

l lin No.. 686,64l. 7

Patented Nov. I2, |90l. C. J. WANGLER.

ROTARY BEV-EL SHEARS. (Apphcation led May 8, 1901 2 Sheets-Sheet 2.

(No Modeh) ffii I 'Illlllllllllll Tn: nomys Pnzusco. Pnoroumo..wAsHmc'roN n c l UNITED STATES .PATENT OFFICE.

CHARLES J. wANeLEE, oF sT. Louis, MIssoUEI.

ROTARY BEVELSHEARS.

SPECIFICATION forming part of Letters Patent No. 686,641, dated November12, 1901.

Application led May 8, 1901.

T @ZZ whom it may concern.-

Beit known that I, CHARLES J. WANGLER,

a citizen of the United States of America, and' a resident of the cityof St. Louis, and State` This invention relates to that class of Ypower-shears for beveling the edges of heavy metal plates in which apair of power-driven cutter-disks are employed to trim off to a bevelthe edges of the boiler-plate, crownsheets, and the like heavyplate-metal ar- The present improvement has for its object to provide asimple, durable, and efficient construction and arrangementl of partswith which the lateral strain upon the carryingshafts of the cutters isvery efficiently avoided and the usual tendency of the saine to springand to break at a point adjacent to the cutters and unduly wear theshaft-bearing is avoided and which in addition affords a convenient andready means for adjusting the parts to circular work of varyingdiameters or radii, all as will hereinafter more fully appear and bemore particularly1 pointed out in the claims. I attain theabovementioned objects vby the construction and arrangementl ofpartsillustrated in the accompanying drawings, in which- Figure 1 is aside'view of a rotary bevelshears with parts in section, illustratingthe present improvemengthe lower or base portion of the main frame orhousing being omitted; Fig. 2, an elevation in the direction indicatedby the arrow in Fig. 3 of the shifting mechanism for the adjustableroller by which the work is guided during the cutting or bevelingoperation. Fig. 3 is a fragmentary horizontal section at linea so, Fig.1.

Similar numerals of reference indicate like parts in the dierent views.

Referring to the drawings, l represents the main supporting frame orhousing of any usual and approved construction,preferably 'of thehollow-shell form shown, and provided with the usual boxes, pivot-hubs,35o., for the shafts and other mechanisms of the machine.

2 is a shaft arranged horizontally in bearings in the main frame andcarrying at its forward end the lower cutter-disk, as herein- Serial No.59,229. (No model.)

after described, and at its rear end provided with a bevel gear-wheel 3and a large spur gear-wheel 4, connected by a suitable intermediatespeed-redu'cing gear-wheel to a counter-shaft carrying the driving-beltpulley 5 of the machine and the companion idler-pulley 6 thereof.

7 is an obliquely-arranged shaft carrying at 6o its forward end theupper'cutter-disk, as hereinafter described, and at its rear endprovided with a bevel gear-wheel 8 of the same diameter as the bevelgear-wheel 3 and meshing therewith, so as to receive positive rotationtherefrom.

9 is a tubular housing or support for the upper oblique cutter-carryingshaft 7, provided with front and rear bearing-bushings 10 and 11therefor and pivoted at its rear end in the main frame by means of atransverse pivot-pin l2, so as to be capable of a slight radialadjustment.`

13 is a capstau or other like screw having a screw-bearing in the upperand forward end of the main frame, with its lower end adapted to engageagainst the forward end of the tu- Y bular guide housing or support 9 toimpart a positive downward adjustment to the same in the operation ofadjusting the rotary cutting-disks of the present improvement.

14 is a lever pivoted immediately below the tubular housing or support9, with its forward arm engaging beneath the forward portion of saidsupport 9, and preferably by` means of a friction-roller 15, bearingupon an inclined lug or track 16 on said support, as illustrated inFig. 1. j

l 17 is a counterpoise-weight carried on the rear and longer arm of thelever 14 and adapted to overbalance the weight or downward tendency ofthe upper cutter-carrying shaft and its support and impart an upwardtendencyto the forward end of the cutter-carrying shaft and its tubularbearing-support against the downward tendency of the same by gravity.Such weight is made adjustable by means of a series of serrations 18',formed in the long arm of the lever 14: and adapted to engage in thecorrespondingly-formed bore of the weight 17, as clearly illustrated inFig. 1.

The cutter-disks of the present invention will comprise constructions asfollows:

18 is the lower cutter-disk, formed with ICO counterpart chamfered edges19, so as to be reversible, such chamfered edges having in the presentinvention a bevel corresponding to a line drawn at right angles to theaxis of the upper cutting-disk, as clearly illustrated in Fig. 1.Between the chamfered edges 19 the cutter-disk 18 will have anintermediate flat peripheral portion 20, the point of meeting betweenwhich and the beveled surfaces aforesaid will constitute the cuttingedge of the cutter-disk, while the flat peripheral portion 20 willconstitute a holder or support for the work during the bevelingoperation.

21 is the upper cutter-disk, having a ila-t .periphery of a lengthcorresponding to the thickness of the disk, so as to render the samecapable of reversal to replace an edge already worn by continuedcutting. The cutter-disks will be secured in any suitable manner totheir respective shafts, preferably by means of nuts 22, screwing uponthe reduced screwthreaded forward ends of the carrying-shafts, asillustrated in Figs. 1 and 3.

23 is a work guide or bar provided at its forward guide end with afriction-roller 24- Y secured in separated relation to the bracket 26,the curved surfaces of which are provided with locking ratchet-teeth, asshown.

2S is a hand-lever pivoted at one end between the 'ratchet-sectors 27 bya pivot-bolt 29 and provided at its handle end with a levergrip 30,having operative link connection 31 with the ratchet-dog 32, pivoted tothe lever, and adapted to have operative engagement with the teeth ofthe ratchet-sectors 27, so as to lock the said lever in any desiredposition.

33 is a stud or bolt secured in a lateral manner to work-guide 23 andarranged to have movement in the longitudinally-elongated slots 34 inthe ratchet-sectors 27 and a corresponding slot in the guide-frame 25.Operative engagement between the operating-lever 28 and the lateral studor bolt 33 is had by an orifice or slot in said lever, which will beelongated vertically to permit of the vibratory movement of such lever.

I have shown in the drawings the abovedescribed adjusting mechanism asarranged vertically at the side of the machine. It is, however, withinthe province of the present invention to arrange the same in any otherplane that the circumstances or its particular location may suggest.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, ism

1. In a rotary bevel-shears, of the character herein described; thecombination of a pair of cutter-disks arranged oblique] y to each other,the lower disk being carried on a horizontal shaft, and the upper, on ashaft oblique thereto; the upper disk having a cylindrical periphery andthe lower disk having a cylindrical periphery beveled at its rear edge,the intersection of such beveled edge with cylindrical peripheryconstituting the cutting edge of said lower disk, while such cylindricallower disk--with its connecting-shaft and setting--constitutes a supportfor the material as it is fed to the shears; a supporting-frame, andgearing connections imposing positive movement on both shafts,substantially as set forth.

2. In arotary bevel-shears, of the character herein described; thecombination of a pair of cu tterdisks,arranged obliquely to each other;the lower disk being carried on a horizontal shaft, and the upper, on ashaft oblique thereto, the upper disk having a cylindrical periphery,and the lower disk having a cylindrical periphery beveled at its frontand rear edges, the intersection of such rear bevel edge withcylindrical periphery constituting the cutting edge of said lower diskwhile such cylindrical lower disk with its connectingshaft and settingconstitutes a support for the material to be beveled as it is fed to theshears; a supporting-frame, and gearing connections,imposing positivemovement on both shafts, substantially as set forth.

3. In a rotary bevel-shears of the character herein described; thecombination of a pair of cutter-disk-carrying shafts arranged obliquelyto each other, and having gearing connections which afford positivemovement to both shafts, on the forward ends of which the cutter-disksare mounted obliquely to each other; the upper disk having a cylindricalperiphery and the lower disk having a cylindrical periphery beveled atits rear edge; the intersection of such bevel edge with the cylindricalperiphery constituting the cutting edge of said lower disk; and theouter edge of the upper disk constituting the cutting edge thereof; thelower cylindrical disk with its connecting-shaft and setting aifording asupport for the material as it is fed to the shears; together with asupporting-frame, all substantially as described.

IOO

4. In a rotary bevel-shears, the combination lindrical disk-with itsconnecting-shaft and setting-affording a support, for the material as itis fed to the shears; together with a supporting-frame, al1substantially as shown and described.

5. In a rotar57 bevel-shears of the character herein described, thecombination of a main frame, a lower cutter carrying shaft journaled inthe main frame, an upper cutter-carrying shaft j ournaled in tubularhousing pivoted at its rear end in the main housing,

means for adjusting the forward end of such housing, a lever pivoted inthe main frame with its forward end engaging beneath the said housing,and a counterpoise-weight secured to the rear and longer arm of saidlever, substantially as herein described.

6. In a rotary bevelshear's of the character herein described, thecombination of a main frame, a lower cutter 'carrying shaftV journaledin the main frame, an upper cutter-carrying shaft journaled in tubularhousing pivoted at its rear end in the main housing, means for adjustingthe forward end of such housing, a lever pivoted in the upper frame withits forward end engaging beneath the said housing by means of afriction-roller and an inclined track, and a counterpoise-weight securedto the rear and' longer arm of said 1ever, substantially as hereindescribed.

Signed at St. Louis, Missouri, this 3d day of May, 1901.

CHARLES J. l WANGLER Witnesses:

P. S. DRowN, ROBERT BURNS.

